.tab-bar{
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    border-top: 1px solid #ccc;
    &.MuiBottomNavigation-root{
        height: 136px ;
    }
    .MuiBottomNavigationAction-label{
        font-size: 30px;
        &.Mui-selected{
            font-size: 30px;
        }
    }
    img{
        width: 60px;
    }

}